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IR3839MTRPbF Datasheet(PDF) 1 Page - International Rectifier |
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IR3839MTRPbF Datasheet(HTML) 1 Page - International Rectifier |
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1 / 35 page  1 IR3839MPbF Rev 1.41 Fig. 1. Typical application diagram Description The IR3839 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3839 a space-efficient solution, providing accurate power delivery for low output voltage applications. IR3839 is a versatile regulator which offers programmability of switching frequency and current limit while operates in wide input and output voltage range. The switching frequency is programmable from 250kHz to 1.5MHz for an optimum solution. It also features important protection functions, such as Pre-Bias startup, hiccup current limit and thermal shutdown to give required system level security in the event of fault conditions. IR3839 offers margining capability through Vref pin. During the margining operation, PGood tracks Vref via feedback to ensure correct status of the output voltage. The internal LDO enables the device to operate from a single supply. This internal LDO can be bypassed when an external bias voltage is available. Features • Greater than 96% Maximum Efficiency • Single 16V Application • Single 5V Application • Wide Output Voltage Range: 0.6V to 0.9*Vin • Continuous 6A Load Capability • Programmable Switching Frequency up to 1.5MHz • Internal Digital Soft-Start • Enable Input with Voltage Monitoring Capability • Hiccup Mode Over Current Protection • Internal LDO • External Synchronization • Enhanced PreBias Start up • External Reference for Margining Purposes • Input for Tracking Applications • Integrated MOSFET Drivers and Bootstrap Diode • Operating Junction Temp: -40oC <Tj<125oC • Thermal Shut Down • Power Good Output with tracking capability • Over Voltage Detection Feature • Pin Compatible with 10A and 14A Versions • Small Size 5mmx6mm PQFN, 0.9 mm Height • Lead-free, Halogen-free and RoHS Compliant Applications • Netcom and Telecom Applications • Data Center Applications • Distributed Point of Load Power Architectures HIGHLY INTEGRATED 6A SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR SupIRBuckTM PD97513 |
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